Causes of Abnormal Hemoglobin Electrophoresis / 中国实验血液学杂志

OBJECTIVE@#To investigate the possible causes of abnormal hemoglobin electrophoresis results.@*METHODS@#The hemoglobin electrophoresis results of 5 696 patients in the First Affiliated Hospital of Chengdu Medical College from September 2018 to July 2021 were collected, and the abnormal results and clinical significance were analyzed.@*RESULTS@#The results of 486 patients (accounting for 8.53%) were abnormal, of which 300 cases had increased HbA2, 135 cases had decreased HbA2, 44 cases had increased F alone, and 7 cases had abnormal hemoglobin bands. Among the 486 patients, 246 patients were thalassemia gene positive (the positive rate was 50.62%), including 29 cases of α thalassemia, 208 cases of β thalassemia and 9 cases of αβ thalassemia. Among the patients with elevated HbA2, 68.67% were detected β thalassemia, 3.00% αβ thalassemia, 9.33% were suspected to be caused by macrocytosis, 6.33% by thyroid dysfunction, and 12.67% by uncertainty of the method. Among the patients with reduced HbA2, 21.48% were detected α thalassemia, 60.00% iron deficiency anemia, 8.15% were suspected to be caused by thyroid dysfunction, and 10.37% by uncertainty of the method. Among the patients with elevated F alone, the results of thalassemia gene detection were negative, 40.91% of them were suspected to be caused by macrocytosis, 27.27% by hereditary persistence of fetal hemoglobin, 29.55% by special physiological condition of pregnant women, and 2.27% by hyperthyroidism. Abnormal hemoglobin bands were detected in 7 patients, including 4 cases of hemoglobin D, 2 cases of hemoglobin E, and 1 case of hemoglobin J.@*CONCLUSION@#Thalassemia, iron deficiency anemia, macrocytosis such as megaloblastic anemia and non-severe aplastic anemia, thyroid dysfunction, hereditary persistence of fetal hemoglobin, abnormal hemoglobin diseases, the uncertainty of the method are all important causes of abnormal hemoglobin electrophoresis results. In clinical work, the patient's indicators should be comprehensively analyzed to determine the possible cause.

Alterações no VCM e suas correlações com os valores de RDW-SD e RDW-CV em caninos e felinos / Variation in MCV and its correlation with RDW-SD and RDW-CV values in dogs and cats

A anemia é uma síndrome caracterizada pela diminuição do número de hemácias, hematócrito e/ou concentração de hemoglobina. Conforme o Volume Corpuscular Médio (VCM), as anemias podem ser classificadas em microcíticas, normocíticas ou macrocíticas. O RDW (Amplitude de Distribuição dos Eritrócitos) também é utilizado para ajudar na classificação das anemias, refletindo a anisocitose da população eritrocitária. Neste estudo retrospectivo objetivou-se determinar a correlação entre o RDW-SD (Desvio Padrão), RDW-CV (Coeficiente de Variação), macrocitose e microcitose em caninos e felinos atendidos na rotina clínica do Hospital Veterinário da Universidade Luterana do Brasil. Para a realização deste estudo, selecionou-se 662 laudos de hemogramas realizados (434 caninos e 228 felinos), com faixa etária de seis meses até 10 anos, foram divididos em dois grupos: Grupo 1 ­ Anemia microcítica (255 caninos e 61 felinos); Grupo 2 ­ Anemia macrocítica (179 caninos e 167 felinos). Posteriormente, correlacionou-se os grupos com os valores de RDW-SD e RDW-CV. As análises de correlação foram realizadas utilizando o teste Spearman, para a análise de significância foi utilizado o T Student, no programa IBM SPSS®Statistics. Na análise estatística do grupo canino, não houve correlação da microcitose com o RDW-SD, enquanto o RDW-CV apresentou uma correlação inversamente proporcional, razoável. No grupo macrocítico canino, a análise de correlação com o RDW-SD foi moderada e diretamente proporcional, e com o RDW-CV foi moderada e diretamente proporcional. No grupo felino, não houve correlação entre microcitose e RDW-SD, e com o RDW-CV houve uma correlação razoável e inversamente proporcional. Entre macrocitose em felinos e o RDW-SD houve uma correlação moderada e diretamente proporcional, já o RDW-CV apresentou uma correlação razoável e diretamente proporcional. Conclui-se que os caninos e felinos do grupo microcítico apresentam uma correlação com o RDW-CV. Contudo, os caninos com macrocitose apresentaram correlação tanto para o RDW-CV quanto para o RDW-SD, e os felinos apresentaram uma maior correlação com o RDW-SD.

Anemia is a syndrome characterized by a low red blood cell count, hematocrit and/or hemoglobin concentration. According to the Mean Corpuscular Volume (MCV), anemias can be classified as microcytic, normocytic or macrocytic. The RDW (Red Cell Distribution Width) is also used to help classify anemias, reflecting the anisocytosis of the erythrocyte population. This retrospective study aimed to determine the correlation between RDW-SD (Standard Deviation), RDW-CV (Coefficient of Variation), macrocytosis and microcytosis in canines and felines treated in the clinical routine of the Veterinary Hospital of Universidade Luterana do Brasil. To carry out this study, 662 blood count reports were selected (434 canines and 228 felines), aged between six months and 10 years, divided into two groups: Group 1 ­ Microcytic anemia (255 canines and 61 felines); Group 2 ­ Macrocytic anemia (179 canines and 167 felines). Subsequently, the groups were correlated with the values of RDW-SD and RDW-CV. Correlation analyzes were performed using the Spearman test, for the analysis of significance the T Student was used, in the IBM SPSS® Statistics program. In the statistical analysis of the canine group, there was no correlation between microcytosis and the RDW-SD, while the RDW-CV showed a reasonable, inversely proportional correlation. In the canine macrocytic group, correlation analysis with RDW-SD was moderate and directly proportional, and with RDW-CV it was moderate and directly proportional. In the feline group, there was no correlation between microcytosis and RDW-SD, and with RDW-CV there was a reasonable and inversely proportional correlation. There was a moderate and directly proportional correlation between macrocytosis in felines and RDW-SD, whereas RDW-CV presented a reasonable and directly proportional correlation. It is concluded that the canines and felines of the microcytic group present a correlation with the RDW-CV. However, canines with macrocytosis showed a correlation for both RDW-CV and RDW-SD, and felines showed a greater correlation with RDW-SD.

Macrocytosis is highly prevalent in Raebareli district, Uttar Pradesh, India

Background: Anemia is a most common health issue in Indian population mainly due to nutritional deficiencies. A number of factors contribute in anemia which is further categorized based on various parameters in hematological indices and microscopic examination.Methods: A retrospective study has been carried out on the patients (n = 1332) in a retrospective study on the patients (n = 1332) in Raebareli district to determine prevalence of anemia and subsequent categorization into normocytic, microcytic and macrocytic based on complete blood count (CBC) profile and blood smear.Results: This study demonstrates 15.54% patients were diagnosed for anemia and more than half of the total anemic patients (55.07%) were found to be suffered from macrocytosis which was found significantly more prevalent among male (65.17%) compare to female (38.38%) patients.Conclusions: Several factors may contribute to macrocytosis among male population including alcoholism in Raebareli region. However, female patients were found almost equally susceptible to all three forms of anemia: normocytic, microcytic and macrocytic. This study provides a key insight into prevalence and possible causes of different types of anemia in this region which may be useful for implementation of government health programs to counter this problem and provide better treatment plans.

Evaluation of clinical, biochemical and hematological parameters in macrocytic anemia

Background: Macrocytosis can be seen in many hematological and non-hematological disorders and more than one cause may co-exist in an individual. Serum vitamin B12 and folic acid tests are routinely ordered but they are limited by their low sensitivity and specificity. This study is done to analyze the clinical, hematological and biochemical parameters in macrocytic anemia and to study the difference between megaloblastic and non-megaloblastic anemia in these parameters.Methods: There were 100 patients presenting with macrocytosis were taken in to study. A detailed clinical history and physical examination was done in all cases. CBC, biochemical investigations, peripheral blood examination, Vitamin B12, folate levels, bone marrow aspiration and reticulocyte count was done in all cases.Results: Primary bone marrow disorders were the most common cause of macrocytosis (45%). The other causes in decreasing order of frequency were megaloblastic anemia (36%), alcoholism and liver disease (15%), drug induced (2%) and idiopathic thrombocytopenic purpura (1%). There was a significant difference in the mean values of MCV and serum LDH between megaloblastic and non-megaloblastic macrocytosis. When serum LDH >1124.5IU/L or MCV>120.5fl (criterion values of ROC curve) with reticulocyte count <2% was taken as criteria, the sensitivity was 94.4% and specificity was 93% for diagnosing megaloblastic anemia.Conclusions: Systematic evaluation of macrocytosis will help us to distinguish megaloblastic and non-megaloblastic macrocytosis. The blood and biochemical parameters especially CBC, RC, and serum LDH along with supporting clinical features help us in diagnosing megaloblastic anemia in a setup where vitamin and metabolite levels are difficult to obtain.

Prevalencia de anemia en niños del proyecto EquiDar de la región de Azuay-Ecuador / Prevalence of anemia in children of EquiDar project in Azuay region, Ecuador

Introducción: La anemia y su erradicación es una prioridad de organizaciones de salud. La implementación de programas de suplementación nutricional para su disminución es realizada por diversas instituciones. Objetivo: Caracterizar la anemia en niños beneficiarios del proyecto EquiDar, Azuay-Ecuador. Métodos: Investigación con diseño no experimental, prospectivo, observacional, de corte descriptivo-asociativo y transversal, realizada en el período 2015-2016 en el Cantón Cuenca, Azuay- -Ecuador. La muestra probabilística correspondió a 1 091 niños beneficiarios del proyecto EquiDar. Se realizó biometría mediante equipo automatizado. Los índices hematológicos obtenidos se normalizaron según la altura. Los datos se procesaron con SPSS 23.0 mediante estadística descriptiva e inferencial para la comparación de medias y proporciones (H Kruskall Wallis, U de Mann Whitney y Ji-cuadrada). Resultados: La prevalencia de anemia fue de 23,96 por ciento con predomino en la edad preescolar y en zona rural de residencia. El incremento de la edad corrigió el padecimiento mediante asociación inversa. El principal tipo de anemia en la muestra fue de tipo normocítica hipocrómica, seguida de anemia macrocítica. El nivel de macrocitosis en la población fue alto (56 por ciento) en individuos anémicos y no anémicos sugiriendo la concurrencia de otras enfermedades como agente causante. Conclusiones: La prevalencia de anemia en la muestra es un problema moderado de salud pública influido por variables sociodemográficas. La reversión del fenómeno sobrepasa la dimensión nutricional, por lo que es necesario políticas con enfoque multifactorial que integren el área nutricional, educativa y de salud pública(AU)

Introduction: Anemia and its eradication is a priority of health organizations. The implementation of nutritional supplemental programs for its reduction is carried out by several institutions. Objective: To characterize anemia in the children who were beneficiaries of EquiDar project, in Azuay, Ecuador from 2015 to 2016. Methods: Prospective approach with non-experimental, observational, descriptive-associative and cross-sectional design carried out in the period 2015-2016 in Canton Cuenca, Azuay, Ecuador. The probabilistic sample corresponded to 1091 children who are benefit from EquiDar project. Biometry was performed using automated equipment. The hematologic indices obtained were normalized according to the height. Data were processed with SPSS 23.0 and using descriptive and inferential statistics with methods for the comparison of means and proportions (H Kruskall Wallis, Mann Whitney U and square-Ji). Results: The prevalence of anemia was 23.96 percent, predominantly in the preschool ages and in the rural areas. Increasing age corrects the condition by inverse association. The main type of anemia in the sample is hypocromic normocytic, followed by macrocytic anemia. The level of macrocytosis in the population was high (56 percent) in both anemic and non-anemic individuals, suggesting the concurrence of other pathologies as causative agent. Conclusions: The incidence of anemia in the sample is a moderate public health problem influenced by sociodemographic variables. The reversion of the phenomenon surpasses the nutritional dimension being necessary policies with multifactorial approach that integrate the nutritional, educative and public health areas(AU)

The haemato-protective effect of Piliostigma thonningii leaf extract on indomethacin-induced gastric mucosa ulcer in rats

Background: Gastric ulcer is a common gastrointestinal disorder with global consequence, which is aggravated by an imbalance between the aggressive factors and factors that maintain the mucosal integrity. The role of Piliostigma thonningii leaf extract on hematological indices of indomethacin-induced gastric mucosa lesions in Wistar rats was examined.Methods: Thirty-six male rats were divided into six groups of 6 rats each. Group I, the normal control, II gastric ulcerated + cimetidine (standard control), III extract only (100mg/kg bwt), while IV, gastric ulcerated control, V gastric ulcerated + extract (100mg/kg bwt) and VI gastric ulcerated + extract (200mg/kg bwt). After 12 days of administration, gastric ulcer was then induced by oral administration of 40mg/kg bwt indomethacin to rats in groups II, IV, V and VI. The rats were sacrificed 12 hours after indomethacin treatment and blood collected for hematological assay.Results: The RBC count and Hb pattern were similar. There was a significant (P<0.05) decrease in RBC and Hb of the ulcer control group which was normalized on administration of 200mg/kg bwt of P. thonningii extract. The MCV of the ulcer lesion was significantly (P<0.05) reversed to normal by the extract.Conclusions: The P. thonningii leaf extract showed promising result by normalizing decreased levels in RBC and Hb caused by ulcer. Except for platelet counts, the WBC count and differential WBC counts were quite positive. It was able to reverse macrocytosis caused by ulcer lesions to normal, hence exhibiting a hemato-protective nature.

Changes in the Mean Corpuscular Volume after Capecitabine Treatment Are Associated with Clinical Response and Survival in Patients with Advanced Gastric Cancer / Journal of the Korean Cancer Association, 대한암학회지

PURPOSE: Capecitabine is known to increase mean corpuscular volume (MCV). To define the incidence of capecitabine-induced macrocytosis and its association with chemotherapy outcomes, we investigated data of 89 patients with advanced gastric cancer (AGC) who were enrolled in a randomized chemotherapy trial involving capecitabine. MATERIALS AND METHODS: Chemotherapy-naive AGC patients were treated with capecitabine (1,000 mg/m2/day on days 1-14) plus cisplatin (75 mg/m2 on day 1), with or without epirubicin (50 mg/m2 on day 1). Complete blood counts including MCV were measured at baseline and on day 1 of each 3-week chemotherapy course. Macrocytosis was defined as a MCV increase > 10 fL from baseline. Multivariate Cox proportional hazards models were used for analysis of the impact of clinical and MCV values on chemotherapy outcomes. RESULTS: At baseline, the mean MCV was 88.2 fL (normal range, 80 to 100 fL). During chemotherapy, MCV increased in a dose-dependent manner with a mean increase of 11.3 fL. MCV elevation after capecitabine treatment in 74 patients (90%) and 44 patients (42%) developed macrocytosis. RESULTS: of multivariate analysis showed that development of macrocytosis was independent of baseline hemoglobin level, liver metastasis, performance status, or liver function. The number of chemotherapy cycles showed strong association with development of macrocytosis and hematologic adverse events. In addition, a significant association was observed between macrocytosis and clinical response or survival. CONCLUSION: Macrocytosis developed with more frequent and prolonged use of capecitabine. It is possible that association with treatment outcomes warrants further investigation.

Is there pernicious anemia in the tropics

Two cases of pernicious anemia are described, both occuring in elderly Filipinos. Symptomatology , differential diagnosis, and blood and bone marrow findings are discussed. As both cases show macrocytosis, hyperchromia, megalocytosis and megaloblastosis marked anisocytosis, leucopenia, granulocytopenia, "shift to the right" of the neutrophiles and hypersegmentation of the segmented cells; as there is absence of free hydrochloric acid in both cases; as the therapeutic test in both is positive; and finally as the anemia is "idiopathic" in the sense that any secondary anemia can be ruled out, the cases fulfill all requirements for the diagnosis of pernicious anemia. (Summary and Conclusion)